Re: [RFC PATCH 0/2] net: threadable napi poll loop

[Eric Dumazet]

On Tue, 2016-05-10 at 18:03 +0200, Paolo Abeni wrote:

> If a single core host is under network flood, i.e. ksoftirqd is
> scheduled and it eventually (after processing ~640 packets) will let the
> user space process run. The latter will execute a syscall to receive a
> packet, which will have to disable/enable bh at least once and that will
> cause the processing of another ~640 packets. To receive a single packet
> in user space, the kernel has to process more than one thousand packets.

Looks you found the bug then. Have you tried to fix it ?